/ Dictionary / Index R R.V.S.V.P.: Meaning and Definition of Find definitions for: R.V.S.V.P. Pronunciation: [key] the favor of a prompt reply is requested. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. R-value R/W Related Content Daily Word Quiz: gregarious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language